op {
  name: "Unpack"
  input_arg {
    name: "value"
    type_attr: "T"
  }
  output_arg {
    name: "output"
    type_attr: "T"
    number_attr: "num"
  }
  attr {
    name: "num"
    type: "int"
    has_minimum: true
  }
  attr {
    name: "T"
    type: "type"
  }
  attr {
    name: "axis"
    type: "int"
    default_value {
      i: 0
    }
  }
}
